Room-temperature laser oscillation by F2+ color centers in LiF crystal

Taiju Tsuboi

doi:10.1117/12.354862

19 July 1999 Room-temperature laser oscillation by F²⁺color centers in LiF crystal

Taiju Tsuboi

Proceedings Volume 3749, 18th Congress of the International Commission for Optics; (1999) https://doi.org/10.1117/12.354862
Event: ICO XVIII 18th Congress of the International Commission for Optics, 1999, San Francisco, CA, United States

Abstract

Color centers are lattice vacancies which are trapping one or more electrons or holes in ionic crystals. Some of them have been known to be high-gain active materials in tunable solid state lasers. However, most color centers (e.g. FA(II) color center in KC1 crystal) give rise to laser oscillation when the laser-active crystals are cooled with liquid nitrogen [1]. For practical use, it is requested to be able to operate the laser at room temperature (RT) because it is easy to adjust the optical alignment and it is unnecessary to maintain the crystals at liquid nitrogen temperature not only during operation but also after operation to avoid the thermal bleaching of the color centers. The RT stable color center lasers have been achieved predominantly using F2, F2, F2 and F3 color centers in LiF[2,3,4]. Although the RT LiF:F2 color center laser oscillation has been studied by several scientists, all the lasing characteristics have not been clarified.

Citation Download Citation

Taiju Tsuboi "Room-temperature laser oscillation by F²⁺color centers in LiF crystal", Proc. SPIE 3749, 18th Congress of the International Commission for Optics, (19 July 1999); https://doi.org/10.1117/12.354862

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